package com.arron.facade;

public class Projector {
    private static final Projector instance = new Projector();

    private Projector() {
    }

    public static Projector getInstance(){
        return instance;
    }

    public void on(){
        System.out.println("Projector on...");
    }

    public void off(){
        System.out.println("Projector off...");
    }

    public void focus(){
        System.out.println("Projector focus...");
    }
}
